"The Polish police are going to come down on troublemakers like a bag full of anvils and you don't want to be there when it happens," a Krakow paper warned.

"Poland's anti-hooligan squads are armed with: Shotguns firing baton rounds that probably won't kill you as long as you're 30m away, a truck-mounted water cannon affectionately known as ‘the typhoon', a high-tech sonic cannon that can make you wet yourself on its lowest setting, dogs trained to bite you directly in the testicles."

Riot police guard a group of Polish ultra nationalists arested after clashes during the Independence March organized by right wing extremists to mark Poland's Independence Day, on November 11, 2011. AFP PHOTO WOJTEK RADWANSKI